package io;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyDemo2 {
    public static void main(String[] args) throws IOException {


        FileInputStream fis = new FileInputStream("狗子.jpg");

        FileOutputStream fos = new FileOutputStream("gouzizioo.jpg");

        long start = System.currentTimeMillis();

        byte[] data = new byte[1024 * 1];

      //  byte[] da = new byte[1024];
        int len;
        while ((len= fis.read(data)) != -1) {

            fos.write(data,0,len);

        }

        System.out.println("复制完毕");

        long end = System.currentTimeMillis();

        System.out.println("共耗时" + (end - start));
        fis.close();
        fos.close();





        /*
        FileInputStream fis = new FileInputStream("狗子.jpg");
        FileOutputStream fos = new FileOutputStream("gou.jpg");

        long start = System.currentTimeMillis();
        byte[] data = new byte[1024 * 1];
        byte[] da = new byte[1024];
        while (fis.read(data) != -1) {
            fos.write(data);
        }
        System.out.println("复制完毕");
        long end = System.currentTimeMillis();
        System.out.println("共耗时" + (end - start));*/



    }
}
